Speedway Motorsports has reached an agreement to acquire Dover Motorsports, ending the NASCAR track in Delaware’s run as one of the last independent operators in the sport.

Dover Motorsports owned both Dover International Speedway and Nashville Superspeedway in Lebanon, Tennessee. Dover ran its first Cup race in 1969 and was the site of two NASCAR weekends each season starting in 1971. One of the dates was shifted to Nashville before the start of the 2021 season.

SMI struck an agreement for $3.61 per share in cash for an approximate total equity value of $131.5 million.

The deal was announced Monday night.

SMI CEO Marcus Smith said the purchase was “a tremendous opportunity for us to continue growing our investment in motorsports.”

SMI already owns Atlanta Motor Speedway, Bristol Motor Speedway, Charlotte Motor Speedway, Kentucky Speedway, Las Vegas Motor Speedway, New Hampshire Motor Speedway, Sonoma Raceway and Texas Motor Speedway.